I also use Hagerty. They have been very easy to work with. My annual premium is in the neighborhood of $400. It’s based on the value of the vehicle, not the fact it’s registered as a 1969 VW!
My mileage is quoted as being well below 5,000 miles annually and I’ve been pretty good about keeping it under that.
I will gladly send you a PM with the specific cost, deductible, etc. when I get home and have the policy in hand if you like.